29 SEP 2017 by ideonexus

 Roman Arithmetic

...basic Roman arithmetic is largely rather simple, even for those of us spoiled by Arabic notation. Addition is no sweat, because complex Roman numbers already use what math pros call additive notation, with numerals set beside one another to create a larger number. VI is just V plus I, after all. To add large numbers, simply pile all the letters together, arrange them in descending order, and there’s your sum. CLXVI plus CLXVI? CCLLXXVVII, or CCCXXXII. And one of the advantages of the Rom...
Folksonomies: math mathematics education
Folksonomies: math mathematics education
  1  notes
04 MAR 2015 by ideonexus

 Notes From the Cosmic Perspective

Culture is the things you do that you don’t notice. In Italy they have a pasta aisle. In America we have ready made cereal isle, Soft drink aisle. Culture of discovery doesn't last forever Backup mic display Bad seats people Periodic table flags Top countries of element discovery, noble gases Scientists on currency Franklin outwitted god - Lightning rod, discharge electrons 9/11 vs a golden age of islam Alhazen, optics, previously people thought sight was beaming, active 2/3 o...
  1  notes